Re: [PHP] binary data over UDP with PHP?

2004-07-08 Thread Aidan Lister 
If you're receiving binary data back, this function may interest you:

http://aidan.dotgeek.org/lib/?file=function.hexdump.php

Also, why are you messing with chr etc?
$string = \x00\x01\xFF;
etc.


Coder_1024 [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
 Thanks for the feedback.  As it turns out, the reason I was getting zero
 data bytes in my UDP packet was that I had declared the packet variable
 outside the function in which I was using it.

 $packet = chr(0x01).chr(0x1d) etc

 function doSomething($x)
 {
 // using $packet in here gives you an empty variable.
 }

 So I guess it was a very basic PHP language thing I was running into.
Guess
 I've done too much Perl and assumed the variables were accessible in the
 function. :-)


 Keith Greene [EMAIL PROTECTED] wrote in message
 news:[EMAIL PROTECTED]
  I use the following without problem:
 
   $fp = fsockopen(udp://www.server.com, 24250, $errno,
$errstr,
 .2);
  if (!$fp) {
$status = Server not available;
  } else {
   $trigger =
  chr(hexdec('FF')).chr(hexdec('FF')).chr(hexdec('01')).chr(hexdec('00'));
   fwrite($fp,$trigger);   # Send trigger to the
  status server
   $junk = fread($fp, 4);  # discard echoed
command
  from status server
  }
 
  Keith
 
  At 04:23 PM 7/7/2004, coder_1024 wrote:
  I'm trying to send some binary data to a UDP server using PHP.  The
 examples
  I've been able to find show sending binary data over TCP, or they show
  sending text over UDP.
  
  I'm constructing the messages using the below:
  
 $text_msg = Hello, World\r\n;
 $binary_msg = chr(0x01).chr(0x02).chr(0x00).chr(0xAD);
 $binary_msg_size = 4;
  
  I've tried a couple methods of sending the data:
  
 $fp = fsockopen(udp:// . $host,$port,);
 fwrite($fp,$binary_msg,$binary_msg_size);
  
  and
  
 $sock = socket_create(AF_INET,SOCK_DGRAM,SOL_UDP);
 socket_sendto($sock,$binary_msg,$binary_msg_size,0,$host,$port);
  
  In either case, a UDP packet is sent, but with a zero data size.  If I
  instead send the $text_msg, it works as expected.  For some reason
 sending
  the binary data doesn't work.
  
  Does anyone have insight into how to send binary data over UDP using
PHP?
  
  --
  PHP General Mailing List (http://www.php.net/)
  To unsubscribe, visit: http://www.php.net/unsub.php

-- 
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php

[PHP] binary data over UDP with PHP?

2004-07-07 Thread coder_1024 
I'm trying to send some binary data to a UDP server using PHP.  The examples
I've been able to find show sending binary data over TCP, or they show
sending text over UDP.

I'm constructing the messages using the below:

  $text_msg = Hello, World\r\n;
  $binary_msg = chr(0x01).chr(0x02).chr(0x00).chr(0xAD);
  $binary_msg_size = 4;

I've tried a couple methods of sending the data:

  $fp = fsockopen(udp:// . $host,$port,);
  fwrite($fp,$binary_msg,$binary_msg_size);

and

  $sock = socket_create(AF_INET,SOCK_DGRAM,SOL_UDP);
  socket_sendto($sock,$binary_msg,$binary_msg_size,0,$host,$port);

In either case, a UDP packet is sent, but with a zero data size.  If I
instead send the $text_msg, it works as expected.  For some reason sending
the binary data doesn't work.

Does anyone have insight into how to send binary data over UDP using PHP?

-- 
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php

Re: [PHP] binary data over UDP with PHP?

2004-07-07 Thread Keith Greene 
I use the following without problem:
$fp = fsockopen(udp://www.server.com, 24250, $errno, $errstr, .2);
if (!$fp) {
 $status = Server not available;
} else {
$trigger = 
chr(hexdec('FF')).chr(hexdec('FF')).chr(hexdec('01')).chr(hexdec('00'));
fwrite($fp,$trigger);   # Send trigger to the 
status server
$junk = fread($fp, 4);  # discard echoed command 
from status server
}

Keith
At 04:23 PM 7/7/2004, coder_1024 wrote:
I'm trying to send some binary data to a UDP server using PHP.  The examples
I've been able to find show sending binary data over TCP, or they show
sending text over UDP.
I'm constructing the messages using the below:
  $text_msg = Hello, World\r\n;
  $binary_msg = chr(0x01).chr(0x02).chr(0x00).chr(0xAD);
  $binary_msg_size = 4;
I've tried a couple methods of sending the data:
  $fp = fsockopen(udp:// . $host,$port,);
  fwrite($fp,$binary_msg,$binary_msg_size);
and
  $sock = socket_create(AF_INET,SOCK_DGRAM,SOL_UDP);
  socket_sendto($sock,$binary_msg,$binary_msg_size,0,$host,$port);
In either case, a UDP packet is sent, but with a zero data size.  If I
instead send the $text_msg, it works as expected.  For some reason sending
the binary data doesn't work.
Does anyone have insight into how to send binary data over UDP using PHP?
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php

Re: [PHP] binary data over UDP with PHP?

2004-07-07 Thread coder_1024 
Thanks for the feedback.  As it turns out, the reason I was getting zero
data bytes in my UDP packet was that I had declared the packet variable
outside the function in which I was using it.

$packet = chr(0x01).chr(0x1d) etc

function doSomething($x)
{
// using $packet in here gives you an empty variable.
}

So I guess it was a very basic PHP language thing I was running into.  Guess
I've done too much Perl and assumed the variables were accessible in the
function. :-)


Keith Greene [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
 I use the following without problem:

  $fp = fsockopen(udp://www.server.com, 24250, $errno, $errstr,
.2);
 if (!$fp) {
   $status = Server not available;
 } else {
  $trigger =
 chr(hexdec('FF')).chr(hexdec('FF')).chr(hexdec('01')).chr(hexdec('00'));
  fwrite($fp,$trigger);   # Send trigger to the
 status server
  $junk = fread($fp, 4);  # discard echoed command
 from status server
 }

 Keith

 At 04:23 PM 7/7/2004, coder_1024 wrote:
 I'm trying to send some binary data to a UDP server using PHP.  The
examples
 I've been able to find show sending binary data over TCP, or they show
 sending text over UDP.
 
 I'm constructing the messages using the below:
 
$text_msg = Hello, World\r\n;
$binary_msg = chr(0x01).chr(0x02).chr(0x00).chr(0xAD);
$binary_msg_size = 4;
 
 I've tried a couple methods of sending the data:
 
$fp = fsockopen(udp:// . $host,$port,);
fwrite($fp,$binary_msg,$binary_msg_size);
 
 and
 
$sock = socket_create(AF_INET,SOCK_DGRAM,SOL_UDP);
socket_sendto($sock,$binary_msg,$binary_msg_size,0,$host,$port);
 
 In either case, a UDP packet is sent, but with a zero data size.  If I
 instead send the $text_msg, it works as expected.  For some reason
sending
 the binary data doesn't work.
 
 Does anyone have insight into how to send binary data over UDP using PHP?
 
 --
 PHP General Mailing List (http://www.php.net/)
 To unsubscribe, visit: http://www.php.net/unsub.php

-- 
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php